Dumbbell



FIG. 1 is a front elevation view of a dumbbell showing my new design, the rear view being the same;

FIG. 2 is a left side elevation view of the dumbbell of FIG. 1, the right side elevation view being a mirror image thereof, the three circular fasteners/holes at the 12 o'clock, 3 o'clock and 9 o'clock positions illustrated in broken lines forming no part of the design to be patented;

FIG. 3 is a top plan view of the dumbbell of FIG. 1;

FIG. 4 is a bottom plan view of the dumbbell of FIG. 1;

FIG. 5 is a right front oblique of the dumbbell of FIG. 1, a left front oblique view being a mirror image thereof, the three circular fasteners/holes at the 12 o'clock, 3 o'clock and 9 o'clock positions illustrated in broken lines forming no part of the design to be patented;

FIG. 6 is a front elevation view of a dumbbell of my new design with additional weight plates, the rear view being the same;

FIG. 7 is a left side elevation view of the dumbbell of FIG. 6, the right side elevation view being a mirror image thereof, the three circular fasteners/holes at the 12 o'clock, 3 o'clock and 9 o'clock positions illustrated in broken lines forming no part of the design to be patented;

FIG. 8 is a top plan view of the dumbbell of FIG. 6; and,

FIG. 9 is a right front oblique view of the dumbbell of FIG. 6, a left front oblique view being a mirror image thereof, the three circular fasteners/holes at the 12 o'clock, 3 o'clock and 9 o'clock positions illustrated in broken lines forming no part of the design to be patented. 

CLAIM The ornamental design for a dumbbell, as shown and described. 